The best thing about this software, its reliability! We've been using it for several years now without any issues on our side - so far :).
It's easy to use (as long as one knows how) but has some limitations in terms of customization options compared with other solutions out there like File Transfer Service or FTP Pro Plus from Net2FTP which are more expensive than MasvRush. I guess we're just not used enough yet because they haven't added much functionality over what was already available before though maybe soon? Maybe try them first if possible since their free plan allows up tp 2 GB per month while larger plans start at $19 / mo.?